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12. Repair Flow Chart
12.1 Main Board
(1). No Power
No power
Press power key and look
if the picture is normal
NG
Please reinsert and make sure
the AC of 100-240 is normal
OK
Measure U404 PIN2=3.3V
Q409 V
collector
OK
X401 oscillate waveforms
are normal
OK
Replace U401
NG
Reinsert or check the
Adapter/Inverter section
=1.8V
NG
Check U404, Q409 and Q410
NG
Replace X401
43
HUDSON 9
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- Operation Instructions
- Main Board
- Power Board
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